Install from AUR (rofi-bluetooth-git), or:
bluez-utils
in Arch)git clone git@github.com:ClydeDroid/rofi-bluetooth.git
cd rofi-bluetooth
./rofi-bluetooth
$PATH
.NOTE:
In order to properly display the bluetooth icon, you will need to use an iconic font in your bar, e.g. Nerd Fonts
[module/bluetooth]
type = custom/script
exec = rofi-bluetooth --status
interval = 1
click-left = rofi-bluetooth &
bindsym $mod+b exec --no-startup-id rofi-bluetooth